You must heat up the device to the highest level and completely fill up with water and then press the Entkalkungsknopf simultaneously and back the thing so long and shake it side to the whole tank once durchgedampft or gone through is. This is quite time consuming and tiring. Since Philips could come up with even what application friendlier.
However, have unfortunately after 3 years the same experience with the rusted metal tongue like Micha must make. Duchgerostetes particles fell while ironing out easily. After steam only possible by pressing the steam button. Otherwise still nurn dry ironing. After three years of course all warranties have expired. Incidentally, I have regularly - as in the manual vorgegeben- the Descaling used (although one of them almost every tendonitis wrist gets)
My Conclusion:
- Ironing good
- Does not last very long
- Descaling absolutely uncomfortable